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Document IIF

Etude expérimentale sur la performance du R407C pour remplacer le R22 dans un refroidisseur à vis muni d'échangeurs tubulaires.

Experimental investigation on the drop-IN performance of R407C as a substitute for R22 in a screw chiller with shell-and-tube heat exchangers.

Auteurs : LEE D. Y., AHN Y., KIM Y., et al.

Type d'article : Article, Article de la RIF

Résumé

A drop-in test of a mixed refrigerant R407C is performed in a commercial screw chiller with shell-and-tube heat exchangers originally designed for R22. The test results show a severe performance reduction when substituting the refrigerant from R22 to R407C. The reason for the performance reduction is analyzed comprehensively, and the influence of thermodynamic properties, compressor efficiency, and heat transfer is evaluated quantitatively. The major factor causing the performance reduction is assessed as the degradation of the heat transfer in using the mixed refrigerant, R407C. The heat transfer degradation in the evaporator is found to be larger and influences more on the chiller performance reduction. The performance reduction caused by the evaporator is approximately two times compared with that of the condenser.

Documents disponibles

Format PDF

Pages : 575-585

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigation on the drop-IN performance of R407C as a substitute for R22 in a screw chiller with shell-and-tube heat exchangers.
  • Identifiant de la fiche : 2003-0089
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 5
  • Date d'édition : 08/2002

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